Here are some photos where I discharged the HV on my Zenith 25HC50 chassis set. These run the highest 2nd anode voltage I am aware of.
old coot88 - added that this voltage can partially recover, so once is not enough. So true!
Also, beware of kines that barely light up because those will store even more kV! Don't be fooled by a dim CRT.
HV disch 1.jpg
HV disch 2.jpg
HV disch 3.jpg